针对太阳光光纤照明技术中的光污染、光纤老化、聚光区温度过高等问题,设计了一种分光型太阳光光纤传输系统。介绍了利用光的色散性进行光谱分光、变径光纤低温聚光、传输可见光及各项参数的确定方法。分析了影响系统光传导效率的各种因素及后续解决方法。实现了紫外光及红外光与可见光的分离,滤除了光污染,消除了塑料光纤在太阳光长期照射下容易老化的问题,有效地降低了聚光区温度,实现了低温聚光和波长范围在400~700nm的可见光绿色照明。

A spectrum split solar lighting optical fiber transmission system is developed in order to solve the problem about light pollution,optical fiber aging and the high concentration zone temperature in the sun light fiber optic lighting technology. The spectrum split principle using the dispersion of light,low temperature condenser using tapered fiber,principle of transmission of visible light are described. The various factors affecting the system optical transmission efficiency and subsequent solution are analyzed. It is proved that the system achieves the separation of UV,infrared and visible light,the light pollution is filtered,and the problems about that the plastic optical fiber is easy to aging in longterm exposure under sunlight are eliminated. The condensing temperature is reduced effectively,the low temperature condensation is achieved. The green lighting of 400~700nm wavelength range of visible light is realized.